Los Angeles -LRB- CNN -RRB- Conrad Hilton , the younger brother of celebrity heiress Paris Hilton , has reached a plea deal : He would admit guilt to misdemeanor assault against flight attendants in exchange for a federal felony charge being dropped , court papers says .

The deal would require prosecutors to recommend probation for Hilton , who also allegedly called passengers `` peasants '' on a London-to-Los Angeles flight last summer .

Hilton , 20 , is scheduled to appear Thursday in federal court , but he is not expected to plead guilty at that time , said spokesman Thom Mrozek of the U.S. Attorney 's Office .

Hilton , who is free on $ 100,000 bond , was initially charged with a felony that could have carried a prison sentence up to 20 years upon a conviction .

The misdemeanor charge carries up to a six-month prison sentence and a fine of at least $ 5,000 , but federal prosecutors have agreed that they would `` recommend that defendant be sentenced to a term of probation , '' court records said .

The class B misdemeanor accuses Hilton of assaulting two flight attendants aboard a British Airways flight on July 31 , 2014 , `` by intentionally using a display of force that reasonably caused -LRB- the attendants -RRB- to fear immediate bodily harm , '' according to court documents filed last week .

Hilton signed court papers last week that state he `` repeatedly entered the bathroom to smoke marijuana and tobacco '' during Flight 269 from London to Los Angeles , court papers said .

Read the plea deal

`` He also become belligerent toward some of the flight attendants , '' according to court papers signed by Hilton and his attorney .

His attorney could n't be immediately reached for comment Wednesday .

At one point , Hilton told one flight attendant multiple times that `` I am going to f ------ kill you , '' according to the court papers .

Hilton also `` punched at , but missed '' another flight attendant , the court documents said .

A more complete description of events aboard the flight was provided in initial court papers filed in early February . Those alleged Hilton threatened and intimidated flight attendants , scared parents and disengaged a bathroom smoke alarm .

The court documents alleged Hilton punched the bulkhead next to an attendant 's head , missing his face by about 4 inches , and told the crew , `` I could get you all fired in five minutes . I know your boss ! ''

`` My father will pay this out , he has done it before . Dad paid $ 300,000 last time , '' Hilton allegedly told a flight attendant .

Hilton 's father is Rick Hilton , the grandson of the Hilton Hotel empire 's founder , Conrad Nicholson Hilton . Rick Hilton and his wife of more than 30 years , Kathy , are parents of four children : Paris , Nicky , Barron and Conrad .

Conrad Hilton left his seat five minutes after takeoff , even though the `` fasten seat belt '' sign was still on , authorities said . Another flight attendant said Hilton rose from his seat at least 20 times during the 10 1/2 - hour flight , court documents said .

Read the initial federal complaint -LRB- Warning : profane language -RRB-

When Hilton became enraged because a flight attendant was following him , he shouted several times that `` I am going to f ------ kill you ! '' and used other vulgarities , court papers said .

Passengers became frightened and disturbed , authorities said .

A French family was seated behind Hilton , and the father got out of his seat and leaned `` over his kids in a protective gesture '' during one of Hilton 's rants , a flight attendant told authorities , according to court papers .

Hilton yelled several times , saying `` I will f ------ own anyone on this flight ; they are f ------ peasants . ''

Hilton also accused the flight attendants of `` taking the peasants ' side '' and then said he was angry because he had just broken up with a girlfriend , court papers said . He bragged that he was already banned by other airlines .

At some point during the flight , the attendant saw Hilton go into a bathroom and smelled cigarette smoke coming from it , authorities said .

The flight 's pilot , who was second-in-command to the captain , `` noticed the smoke detector above the bathroom ceiling had been stuffed with paper towels , apparently to prevent the smoke alarm from sounding , '' court papers said .

The pilot later confronted Hilton , and Hilton surrendered a used pack of cigarettes and a lighter , authorities said .

Hilton returned to his seat and fell asleep .

The captain authorized crew members to form a `` restraint team '' to constrain Hilton before he woke up , authorities said in court papers .

The crew used a blanket and handcuffs on Hilton about 75 minutes before the plane landed , authorities said .

He awoke while being restrained and began screaming obscenities , court documents said .

`` As Hilton was being restrained , he told the flight attendants he was a model and that they were ` going to ruin my career , ' '' according to an affidavit by FBI agent David Gates filed in court in early February .

Later , in an interview with the FBI the same day , Hilton said he started his travels in Mykonos , Greece , had a connection in Athens , and then traveled to London , authorities said .

He took a sleeping pill before boarding the flight to Los Angeles , court papers said .

Hilton admitted to calling people `` peasants '' on the flight , but he `` denied having a confrontation with a flight attendant near the start of the flight but acknowledged having other issues with flight attendants , '' the affidavit said .

Hilton allegedly told the FBI agent : `` I told all of them I could get all of their jobs taken away in less than 30 seconds , '' the affidavit said .

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Conrad Hilton , younger brother of Paris Hilton , will admit to misdemeanor assault

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Penalty for the charge is up to six months in prison , but prosecutors will recommend probation

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Hilton signs court documents stating he smoked pot on flight , `` became belligerent ''